I have always liked bicycle ephemera with an affinity toward paper-catalogs and packaging. Below are some of the envelopes that chainrings were packaged in.
I love the boastfulness of this Stronglight envelope. (what didn’t they win!)
For the Stronglight Mod. 63 Super Competition chainring
TA’s logo was simple and beautiful
Earlier Campagnolo envelope, for 1″pitch track chainring.
early 1980s Campagnolo track chainring envelope.
Via Bicycle 